Seal-Lokâ¢ O-Ring Face Seal Tube Fittings zfc21 ... - LSR Distribuidor

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4300 Catalog Seal-Lok O-Ring Face Seal Tube Fittings The Seal-Lok Braze Sleeve. A second method of sleeve attachment is with the braze sleeve. The sleeve is brazed to the tube end as shown in Fig. B3. The flat, smooth surface of the braze sleeve seals against the O-ring when fully assembled. The holding power is provided by the braze. Braze Sleeve O-ring Parflange Sleeve How Seal-Lok Fittings Work The Seal-Lok fitting body face contains a high durometer O- ring that is held captive in a precision machined groove. As the nut is tightened onto the fitting body, the O-ring is compressed between the body and flat face of the tube flange or braze sleeve to form a tight, positive seal (see Fig. B3). As the two faces come in contact, further tightening of the nut produces a sharp rise in assembly torque. A solid pull of the wrench at this point, to recommended assembly torque, completes the assembly. The sharp torque rise gives a “solid feel” at assembly, and minimizes the possibility of over tightening. Because the sealing surfaces are flat and perpendicular to the assembly pull, they remain virtually free of distortion during assembly, giving Seal-Lok fittings virtually unlimited remakeability. The O-ring should be inspected at each disassembly and replaced when necessary. See the O-Rings and Seals section for information on replacement face seal O- rings. Nut Fitting Body Fig. B3 — Seal-Lok Union cutaway with flanged and brazed assemblies Metric Seal-Lok The tube/hose end connection for metric Seal-Lok is the same as standard (inch) Seal-Lok. It consists of a body, a flange or braze sleeve, an O-ring and a nut. The difference is at the port end of the fitting. Instead of the SAE straight thread connection, it features a similar connection with metric threads per ISO 6149- 2. Additionally, the fitting body, tube nut and locknut are manufactured with metric hexes or forging wrench flats. The metric Seal-Lok fittings meet or exceed all requirements of ISO 8434-3. Identification To differentiate metric Seal-Lok from standard (inch) Seal-Lok, the following identification features have been incorporated in the design: • Straight connectors (straight studs) have a short length of turn diameter with a small groove machined in it’s middle, as seen in Fig. B4. • The lock nuts on shaped connectors (stud elbows, tees and crosses) have a similar turn diameter adjacent to the washer, without a groove, as seen in Fig. B4. • The sleeve is identified by a small groove machined on its large diameter as shown in Fig. B5. Turned Diameter Turned Diameter with Groove Fig. B4 — Metric Seal-Lok Straight and Shaped Connectors with Identification for use with ISO 6149-1 Port Small Identification Groove for Metric Tube Fig. B5 — Metric (Tube) Seal-Lok Sleeves B6 Parker Hannifin Corporation Tube Fittings Division Columbus, Ohio www.parker.com/tfd
4300 Catalog Seal-Lok O-Ring Face Seal Tube Fittings Versatility The Seal-Lok fitting is very versatile in that it can be used with inch and metric tubing, as well as hose (see Fig B6). The following example illustrates the options with a ½" (-8) Seal- Lok fitting: • ½" fitting and ½" nut can connect to ½" tubing using the ½" sleeve. • ½” fitting and ½" nut can connect to 12 mm tubing using 12 mm sleeve. • Without nut and sleeve, ½" fitting can connect to hose. The process also works in reverse. A metric Seal-Lok fitting and metric nut can connect to inch tubing by simply using the inch sleeve. Tube Wall Thickness Recommended min/max tube wall thicknesses for inch and metric Seal-Lok are provided in Table B2 and Table B3 respectively. When using the braze method, all tube wall thicknesses can be used. For Parflange min/max tube wall thickness range, please refer to page S29 for tooling availability. With any fitting, proper assembly and installation is critical to its success. Please refer to pages T10-T16 for the proper assembly and installation procedures for the Seal-Lok fitting. Note: Brazing to attach the sleeve can be used for all wall thicknesses. Body Inch Sleeve and Tube Metric Sleeve and Tube Hose Fig. B6 — Seal-Lok Works with Inch or Metric Tube and Hose Steel, Alloy Steel, St. Steel, Size Copper, Monel O.D. Dash SAE O-Ring Inches Number Face Seal Seal-Lok 1/4 -4 .020 – .083 3/8 -6 .020 – .109 1/2 -8 .028 – .148 5/8 -10 .035 – .134 3/4 -12 .035 – .148 7/8 -14 .035 – .156 1 -16 .035 – .188 1 1/4 -20 .049 – .220 1 1/2 -24 .049 – .250 2 -32 .058 – .250 Table B2 — Recommended Min./Max. Tube Wall Thickness for Inch Seal-Lok Nut O.D. Size in mm Steel, Alloy Steel, Stainless Steel, Copper, Monel Used With Fitting Size Wall Thickness in mm 6 .5 - 2.25 -4 8 1.0 - 2.5 -6 10 1.0 - 3.0 -6 12 1.0 - 3.5 -8 14 1.0 - 4.0 -10 15 1.0 - 3.0 -10 16 1.0 - 3.0 -10 18 1.0 - 3.0 -12 20 1.5 - 4.0 -12 22 1.0 - 3.0 -16 25 2.0 - 5.0 -16 28 1.5 - 5.0 -20 30 2.0 - 5.0 -20 32 2.0 - 2.5 -20 35 2.0 - 6.0 -24 38 2.5 - 7.0 -24 Table B3 — Recommended Min./Max. Tube Wall Thickness for Metric Seal-Lok B7 Parker Hannifin Corporation Tube Fittings Division Columbus, Ohio www.parker.com/tfd
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Seal-Lokâ¢ O-Ring Face Seal Tube Fittings zfc21 ... - LSR Distribuidor